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鸽子
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847天前""" |
pygame的sprite（动画精灵）模块就提供了对碰撞检测的支持 |
""" |
from enum import Enum, unique |
from math import sqrt |
from random import randint |
import pygame |
@unique |
class Color(Enum): |
"""颜色""" |
RED = (255, 0, 0) |
GREEN = (0, 255, 0) |
BLUE = (0, 0, 255) |
BLACK = (0, 0, 0) |
WHITE = (255, 255, 255) |
GRAY = (242, 242, 242) |
@staticmethod |
def random_color(): |
"""获得随机颜色""" |
r = randint(0, 255) |
g = randint(0, 255) |
b = randint(0, 255) |
return (r, g, b) |
class Ball(object): |
"""球""" |
def __init__(self, x, y, radius, sx, sy, color=Color.RED): |
"""初始化方法""" |
self.x = x |
self.y = y |
self.radius = radius |
self.sx = sx |
self.sy = sy |
self.color = color |
self.alive = True |
def move(self, screen): |
"""移动""" |
self.x += self.sx |
self.y += self.sy |
if self.x - self.radius <= 0 or \ |
self.x + self.radius >= screen.get_width(): |
self.sx = -self.sx |
if self.y - self.radius <= 0 or \ |
self.y + self.radius >= screen.get_height(): |
self.sy = -self.sy |
def eat(self, other): |
"""吃其他球""" |
if self.alive and other.alive and self != other: |
dx, dy = self.x - other.x, self.y - other.y |
distance = sqrt(dx ** 2 + dy ** 2) |
if distance < self.radius + other.radius \ |
and self.radius > other.radius: |
other.alive = False |
self.radius = self.radius + int(other.radius * 0.146) |
def draw(self, screen): |
"""在窗口上绘制球""" |
pygame.draw.circle(screen, self.color, |
(self.x, self.y), self.radius, 0) |
